Wax composition and fibrous material coated therewith



Dec. 24, 1957 R. TEMPLIN WAX COMPOSITION AND FIBROUS MATE RIAL COATED THEREWITH Filed April 12, 1955 IN VEN TOR.

PHIL/P R. TEMPLl/V HIS A TTORNEY United States Patent WAX COMPOSITION AND FIBROUS MATERIAL COATED THEREWITH Philip R. Templin, Oakmont, Pa., assignor to Gulf Research & Development Company, Pittsburgh, Pa., a corporation of Delaware Application April 12, 1955, Serial No. 500,827

20 Claims. (Cl. 260-285) This invention relates to an improved wax composition, more particularly to an improved parafiin wax composition having superior heat-sealing properties, and to a fibrous material coated therewith.

The employment of paraffin waxes has undergone a rapid growth in recent years. Thus, large quantities of paraflin wax compositions have found their way into the impregnation and coating of fibrous materials such as paper, fiber board, laminated papers, etc. These compositions have also found wide use in the Waterproofing of various textiles and papers and in the formation of protective coatings.

Among the uses for wax compositions has been as bonding agents in the adhesive bonding technologies such as the Wrapping paper industry and the coated and laminated paper industry. Examples of these uses can be found in the waxed paper employed in wrapping food such as bread, frozen foods, breakfast foods, etc., paperboard cartons and drums, paper milk containers, bottle cap liner coatings, drinking cups, etc., and the various laminated paper compositions. When applied to these uses, one of the most valuable properties of the wax composition is its sealing strength. Thus, in the case of a Wrapping paper, a poor seal requires a costly rewrapping of the package at the wrapping machine and, more seriously, can result in broken packages during subsequent handling. Moreover, the formation of a poor seal must be compensated for by expensive reinforcement techniques, such as the use of excessive amounts of paper for a seal overlap and the use of end labels or tabs for reinforcement. The use of these reinforcement techniques has proved costly in terms of time, material, unit production, customer good will, etc. In the case of laminates a wax of low sealing strength effectuates peeling and separation of the laminated layers.

Moreover, wax compositions possessing other properties such as high tensile strength have also found wide use in the packaging industry. Thus, a highly success ful use for wax compositions has been in the manufacture of certain types of paper milk containers, e. g., paper containers coated with paraffin wax or paraffin wax compositions. It is desirable that the wax employed for coating these paper containers possess a high tensile strength.

I have found that an improved parafiin Wax composition which possesses a very high sealing strength, and also superior tensile strength, can be prepared comprising paraflin wax, a rubbery isobutylene polymer and a longchain alcohol wax.

My invention is broadly applicable to parafiin waxes in general. By parafiin wax I mean to include the hard, crystalline hydrocarbon waxes such as are derived from mineral oils of the mixed base or paraffinic base type, or from shale oils, or the Fischer-Tropsch synthesis of hydrocarbons. The invention is particularly applicable to paraffin waxes having a melting point of about 90 to about 160 F., preferably of about 120 to about 150 F.

By rubbery isobutylene polymer I ea t0 Include "ice polymerized isobutylenes such as polyisobutylene and isobutylene copolymer rubbers with at least 75 percent. and preferably 95 percent or more by weight of the hydrocarbon polymer derived from isobutylene. The molecular weight of the polyisobutylene is not critical and can be varied over a wide range. While polyisobutylene having a Flory molecular weight as low as about 5,000 can be used, I prefer to employ polyisobutylenes having a Flory molecular weightv greater than about 30,000,. preferably of about 55,000 to about 1,325,000. As indicated above, the isobutylene copolymer rubbers comprise high molecular weight polymers containing at least 95 percent by weight of the hydrocarbon as isobutylene constituent. The remainder can comprise, for example,

an olefinic-type compound such as butene, or a compound having a conjugated system of multiple bonds in which at least one of the multiple bonds is an ethylenic double bond. Examples of the last-mentioned type compound include styrene, acrylonitrile, methacrylonitrile methacrylic acid, esters of methacrylic acid, butadiene, isoprene and chlorobutadiene. The preferred isobutylene copolymer employed herein contains 97 to 98 percent of isobutylene constituent and 2 to 3 percent of isoprene constituent.

By Flory molecular weight I mean the viscosity average molecular weight obtained by the method for determining the molecular weights of polymers devised by Paul J. Flory and Thomas G. Fox, Jr., set forth in the Journal of Polymer Science, volume 5, pages 745- 747 (1950). Briefly, this method is based upon a determination of the intrinsic viscosity (N of a solution of the polymer in a solvent, such as benzene, at a fixed temperature, such as 24 C. The Flory molecular weight (M), constituting a viscosity average molecular Weight, is then determined from the following formula:

where K is a constant, which is l.07 10- for polyisobutylene at 24 C., and a is a linear expansion factor equal to unity at 24 C. for polyisobutylene. The in-. trinsic viscosity (N is the limiting value of the ratio of the specific viscosity (N to the concentration of polymer at infinite dilution. The intrinsic viscosity (N is determined by plotting the ratio of the specific vis-. cosity (N to the concentration of polymer against the concentration of the polymer and extrapolating the re sultant plot to zero concentration. The specific viscosity (N is equal to the relative viscosity (N minus one, i. e., N,,,==N,1, the relative viscosity (N being the ratio of the viscosity of the solution of the polymer to the viscosity of the solvent.

Accordingly, to efiect a Flory molecular weight determination, the relative viscosity (N is determined for several different concentrations of the polymer in the solvent. From these several relative viscosities (N,.), the

" corresponding specific viscosities (N,,,) are calculated,

as well as the ratios of the calculated specific viscosities (N to the corresponding concentrations. The ratios thus obtained are plotted against the corresponding con centrations and the straight line plot is extrapolated to zero concentration, thereby providing the intrinsic viscosity (N Among the long-chain alcohol waxes which can be employed in the preparation of the paraflin wax compositions of this invention are saturated long-chain alcohol Patented. Dec. 24, 1957.

erably about 100 to about 200, and m is an integer from one to abut 50, preferably one to about 25. The location of the hydroxyl groups in the long-chain alcohol waxes employed herein can be varied as desired in the molecule and branching can occur within the limits of the structural formula defined above without adversely affecting the sealing and tensile strength properties thereof when such alcohol waxes are employed in combination with a rubbery isobutylene polymer as additives for parafiin waxes. Any long-chain alcohol wax encompassed by the formula defined above having the required number of hydroxyl groups will improve the sealing and tensile strength of paraffin wax when added thereto in admixture with a rubbery isobutylene polymer. The production of the type of long-chain alcohol waxes suitable for use in, admixture with rubbery isobutylene polymers and paraffin waxes in accordance with this invention is shown and described, for example, in U. S. Patent No. 2,504,400 to Erchak, Jr.

As noted, the improved paraflin wax compositions of this invention comprising parafiin wax, a rubbery isobutylene polymer and a long-chain alcohol wax possess a very high sealing strength and superior tensile strength. Unexpectedly, I have found that paraffin wax composi tions comprising paraffin wax and a rubbery isobutylene polymer and a long-chain alcohol wax, when employed within limits hereinafter defined, have a higher sealing strength than compositions comprising only paraffin wax and a rubbery isobutylene polymer or parafiin wax and a long-chain alcohol wax.

While my improved paraffin wax compositions can be prepared with a major amount of a paraffin wax andas low as about 0.01 weight percent, based on the final paraffin wax compositions, of combined rubbery isobutylene polymer and long-chain alcohol wax, I prefer to employ the combined rubbery isobutylene polymer and long-chain alcohol wax in amounts in excess thereof. For best results, the combined rubbery isobutylene polymer and long-chain alcohol wax should be present in an amount greater than about 0.1 percent by weight, and can be present in an amount up to about 50 percent by weight but preferably about one to about percent by weight. The ratio of rubbery isobutylene polymer to long-chain alcohol wax present in the final paraffin wax composition is exceedingly important in obtaining a paraflin wax composition having a higher sealing strength than one containing only parafiin wax and a rubbery isobutylene polymer or only parafiin wax and a long-chain alcohol wax. I have found that in such case of the combined total of rubbery isobutylene polymer and long chain alcohol wax, the weight percent of the rubbery isobutylene polymer must be about 92 to about 46 percent, preferably about 86 to about 52 percent, while the weight percent of the long-chain alcohol wax must be about 8 to about 54 percent, preferably about 14 to about 48 percent. As to the tensile strength of the parafiin wax compositions of this invention, however, the tensile strength increases as a straight line function by increased additions of the two, the tensile strength increase thereof being more pronounced as the ratio of long-chain alcohol wax to rubbery isobutylene polymer increases.

In preparing the paraffin wax compositions of this invention any method that will effect mixing of the three components forming a part thereof and assure the obtaining of a homogeneous mixture can be used. Thus, a convenient and effective method of obtaining the paraffin wax mixture is to place the ingredients in a container, heat the contents thereof to a temperature of about 100 C., and thereupon mix the heated contents, using an Eppenbach homomixer, until a homogeneous solution has been obtained. Depending upon the quality and grade of ingredients employed and other factors involved, the length of time necessary for mixing can be as low; as about 15 minutes or as much as three to four hours.

The invention can best be illustrated by the following examples:

EXAMPLE 1 Into a container are placed, based upon the weight of the final composition, percent by weight of paraffin wax having a melting point of 133 F., and a combined total of 5 percent by weight of Alcowax 7 (a product of the Semet-Solvay Division of Allied Chemical and Dye Corporation) found upon analysis to possess the following structural formula: C H OH and-polyisobutylene having a Flory molecular weight of 84,000. The longchain alcohol wax and the polyisobutylene are employed in the following ratios: 5:0, 4:1, 3:2, 2.5:2.5, 2:3, 1:4 and 0:5. The ingredients are heated to a temperature of about C. and mixed with an Eppenbach homomixer for about one hour until a homogeneous mixture 18 obtained.

EXAMPLE II Into a container are placed, based upon the weight of the final composition, 95 percent by weight of paraffin wax having a melting point of 133 F., and a combined total of 5 percent by weight of Alcowax M (a product of the Sernet-Solvay Division of Allied Chemical and Dye Corporation) found upon analysis to possess the following structural formula: C H (OH) and polylsobutylene having a Flory molecular weight of 84,000. The long-chain alcohol wax and the polyisobutylene are employed in the following ratios: 5:0, 4: 1, 3:2, 2.5 :25, 2:3, 1:4 and 0:5. The ingredients are heated to a temperature of about 100 C. and mixed with an Eppenbach Homomixer for about one hour until a homogeneous mixture is obtained.

EXAMPLE III Another parafiin wax composition in accordance with this invention is obtained by employing as ingredlents therefor a paraffin wax having a melting point of F., Alcowax 6 (a product of the Semet-Solvay Division of Allied Chemical and Dye Corporation) found upon analysis to possess the following structural formula:

and polyisobutylene having a Flory molecular weight of 587,000. The ingredients are employed in the same percentages and ratios as in Example II and are combined in the same fashion. EXAMPLE IV Still another parafiin wax composition in accordance with the present invention is obtained by employing as ingredients therefor a paraffin wax having a melting point of 125 F., Alcowax G (a product of the Semet-Solvay Division of Allied Chemical and Dye Corporation) found upon analysis to possess the following structural formula: C H (OH) and polyisobutylene having a Flory molecular weight of about 1,325,000. The ingredients are again employed in the same percentages and ratios as in Example II and are combined in the same fashion.

EXAMPLE V Yet another paraffin wax composition in accordance with the present invention is obtained by employing as ingredients therefor a paraffin wax having a melting point of 125 F., Alcowax 6 and an isobutylene copolymer made by copolymerizing polyisobutylene and isoprene. About 2 percent of the hydrocarbon present in this copolymer is derived from isoprene, the rest being derived from isobutylene. The Flory molecular weight of the copolymer is 55,000. The ingredients are again employed in the same percentages and ratios as their corresponding ingredients in Example II and are combined in the same fashion.

EXAMPLE VI Still another parafiin wax composition in accordance with the present invention is prepared by employlng as ingredients therefor about 99 percent by weight of a parafiin wax having a melting point of 122 F and a coma bin'ed total of one percent by weight of Alcowax 6 and polyisobutylene having a Flory molecular weight of 30,000. The long-chain alcohol wax and polyisobutylene are again employed in the same ratios as in Example 11 and are combined in the same manner.

EXAMPLE VII Yet another paraffin wax composition in accordance with the present invention is prepared by employing as ingredients therefor about 90 percent by weight of a paralfin wax having a melting point of 133 F., and a combined total of percent by weight of Alcowax M and polyisobutylene having a Flory molecular weight of 84,000. The long-chain alcohol wax and polyisobutylene are again employed in the same ratios as in Example II and are combined in the same manner.

EXAMPLE VIII Another parafiin wax composition in accordance with the present invention is prepared by employing as ingredients therefor about 80 percent by weight of a paraffin wax having a melting point of 130 F. and a combined total of 20 percent by weight of Alcowax 6 and polyisobutylene having a Flory molecular weight of 84,000. The longchain alcohol wax and polyisobutylene are again employed in the same ratios as in Example II and are combined in the same manner.

EXAMPLE IX Yet another parafiin wax composition in accordance with the present invention is prepared by employing as ingredients therefor about 50 percent by Weight of a parafiin wax having a melting point of 125 F. and a combined total of 50 percent by weight of Alcowax 7 and polyisobutylene having a Flory molecular weight of 84,000. The long-chain alcohol wax and polyisobutylene are again employed in the same ratios as in Example H and are combined in the same manner.

As noted, I have found that paraifin wax compositions comprising paraffin wax, a rubbery isobutylene polymer and a long-chain alcohol wax, have a higher sealing strength than compositions comprising only paraflin wax and a rubbery isobutylene polymer or paraifin wax and a long-chain alcohol wax, the latter two used within the percentages described above. The compositions containing the three components possess, in addition, superior tensile strength. This is best shown in Tables I and II below wherein the data obtained in testing the paraffin Waxes produced in Examples I and II, respectively, are tabulated.

The sealing strength of the paraffin wax compositions was tested in the following manner. A 25-pound sulfite bread wrapper paper was treated with the paraffin wax composition to obtain a uniform deposition of about 12 to 13 pounds of wax composition per ream of 480 24-inch by 36-inch sheets. The waxed paper was then cut into strips 3 inches by 9 inches with the length being parallel to the paper fiber. After the waxed paper strips had been held at a constant temperature of 70 F. for at least 12 hours, they were sealed along the 3-inch width by means or" a brass roll heated to a temperature of about 190 and 200 F. and then aged for 24 hours at 70 F. The sealing strength of the seal was then obtained by first trimming the seal to a width of 2 inches and a length of 4 inches, and then determining the amount of tension required to peel the sealed strips apart at a standard rate of pull of 5 millimeters per second, The sealing strength values are reported as grams per linear inch of width. The tensile strength or the parafiin Wa mp s t ons as ta n in a c rd: ance with TAPPI Tentative Standard T,644m..54.

Table I Paraffin Polyisobutyl- Sealing Tensile Wax, Percent lone, Percent Alcowax 7 Strength, Strength, by Wt. (133 by Wt. (84,000 f lms/in. Pounds/M.

E. M. P.) M. W.) in.

Table II Paraifin Polyisobutyl- Sealing Tensile Wax, Percent lene, Percent Alcowax M Strength, 1 Strength,

by Wt. (133 by Wt. (84,000 GmS./l1'l. Pounds/ ,4

E. M. P.) M. W.) in.

Data relating to sealing strength obtained from Tables 11 and II have been employed in the preparation of the curves shown in the accompanying figure, which is hereby incorporated in and made a part of the specification. In the figure, the ratio of the long-chain alcohol Wax to polyisobutylene has been plotted against the sealing strengths of parafiin wax compositions containing 133 E. M. P. paraflin wax, polyisobutylene having a Flory molecular weight of 84,000 and Alcowax 7 or Alcowax M. The curved marked 1 refers to the composition containing Alcowax 7, while the curve marked 2 refers to the composition containing Alcowax M. An examination of the curves reveals that paraflin wax composi tlons containing parafiin wax and selected amounts of a rubbery isobutylene polymer and a long-chain alcohol wax have a higher sealing strength than paraffin wax compositions containing only polyisobutylene or a longchain alcohol wax. As can be seen, this effect is par: ticularly striking with parafiin wax compositions wherein the weight percent of rubbery isobutylene polymer in the combined total of rubbery isobutylene polymer and long-chain alcohol wax is about 86 to about 52 percent and the weight percent of long-chain alcohol wax is about 14 to about 48 percent.

The data tabulated below further show that paraifin wax compositions comprising parafiin wax, a rubbery isobutylene polymer and a long-chain alcohol wax possess higher sealing strength than compositions containing paraffin wax and only a rubbery isobutylene polymer or a long-chain alcohol wax. The paraflin wax employed in each case had a melting point of lF., and the compositions were prepared as in Example 11 using an Eppenbach Homomixer.

Table IV Paraffin Polyiso- Wax, butylene, Sealing Percent Percent by Alcowax 7 Strength, by Wt. \Vt. (84,000 GmSJin.

Table V Polyiso- Paraflm butylene, Sealing Wax, Percent Alcowax 7 Strength, Percent by Wt. GrnsJEn. by Wt. (587,000

97. 5 2. 5 i) 97. 5 e 2. 5 31 95. 0 u. 5. 0 2 1 05.0 2 5 2.5 38 95. 0 1. 0 4. 0 40 90. 0 5.0 5.0 53

In each instance in Tables III, IV and V above, compositions containing parafiin wax, a rubbery isobutylene polymer and a long-chain alcohol wax had a.v higher sealing strength than a parafiin wax composition containing paraflin wax and one only of a rubbery iso butylene polymer or a long-chain alcohol wax. Thus, in Table III a parafiin wax composition containing 95, percent by weight, of paralfin wax and 5 percent of Alcowax 6 had a sealing strength of 26 grams per inch, while one containing thesa'me amount of paraffin wax and 2.5 percent of polyisobutylene and 2.5 percent of Alcowax 6 had a sealing strength of 74 grams per inch. When the total weight of Alcowax 6 and polyisobutylene is increased to 10 percent, the ratio between the two remaining the same, the sealing strength was raised to 114 grams per inch. The data in Tables IV and V par allel that of Table III.

In addition to possessing improved sealing strength and tensile strength, the parafiin wax compositions of this invention are also characterized by a superior blocking point. Blocking can be defined as the temperature at which two sheets of paper coated with a wax composition will stick together such that upon separation of the sheets 50 percent or more of the coating is damaged. This is shown in Table VI wherein compositions comprising parafi'in wax having a melting point of 130 F., a polyisobutylene having a molecular weight of 84,000 and one of Alcowax M, Alcowax 7, and Alcowax 6 were tested for such property. The compositions were prepared in the manner described in Example I. The blocking point was obtained in accordance with TAPPI Tentative Standard T477m-47.

The data in Table VI show that representative parafiin wax'compositions of this invention have a blocking point of 108 F. or more. This'is to be contrasted with the 8 parafiin-wax alone which has a blocking-point of but F. As previously noted, the paraffin wax compositions ,of this invention are of particular value in coating fibrous materials. The application of the wax compositions to a fibrous base can .be performed in any conventional manner and the amount applied thereto will vary with the type.

of fibrous base and the use to which it is put. In Example X below is shown the application of the paraflin wax compositions of this invention to a paper base.

EXAMPLE X The paraffin wax composition of Example I is placed in a tank and maintained therein as a molten bath at a temperature of about F. The paper to be coated with the parafiin wax composition, a 25-pound white opaque sulfite paper, machine glazed on one side and coated with titanium oxide on the other, is passed successively through the molten wax bath at a linear speed of about 50 feet per minute with an immersion time of one second, a set of squeeze rolls to remove excess wax, and a water bath maintained at a temperature of about 35 F. with an immersion time therein of about one second to chill and solidify the coating on the paper. The coated paper is then wound upon a spool and is ready for use or additional processing. The wax deposition on the paper produced is about 2 grams per square foot of surface area.

In addition to paraffin wax, a rubbery isobutylene polymer and a long-chain alcohol wax, the paraifin wax compositions of the present invention can also contain other additives normally incorporated in paraffin wax compositions for a particular purpose without departing from the spirit and scope thereof. For example, additives such as antioxidants, coloring agents, perfumes, etc., can be added to the paraffin wax compositions without adversely affecting the sealing strength and other properties thereof.

Obviously, many modifications and variations of the invention as hereinabove set forth may be made without departing from the spirit and scope thereof, and therefore only such limitations should be imposed as are indicated in the appended claims.

I claim:

1. An improved paraffin wax composition comprising a major amount of a paraffin wax and a minor amount of a rubbery isobutylene polymer and a long-chain alcohol wax having the following structural formula:

wherein it is an integer from about 50 to about 310 and m is an integer from one to about 50.

2. An improved paraffin wax composition comprising a major amount of a paraffin wax and a minor amount of a polyisobutylene and a long-chain alcohol wax having the following structural formula: C H (OH) wherein k is an integer from about 50 to about 310 and m is an integer from one to about 50.

3. An improved paraffin wax composition comprising a major amount of a paraffin wax and a minor amount of a rubbery isobutylene polymer and a long-chain alcohol wax having the following structural formula:

wherein it is an integer from about 50 to about 310 and m is an integer from one to about 50, the weight percent of rubbery isobutylene polymer in said minor amount of rubbery isobutylene polymer and long-chain alcohol wax being about 92 to about 46 percent and the weight percent of long-chain alcohol wax being about 8 to about 54 percent.

4. An improved paraflin wax composition comprising a major amount of a parafiin wax and a minor amount of a polyisobutylene having a Flory molecular weight above about 5,000 and along-chain alcohol wax having the fol- 5 lowing structural formula: 'C;, ,,,H k.t,,, (OH) where in k is an integer from about 50 to about 310 and m is an integer from one to about 50, the weight percent of polyisobutylene in said minor amount of polyisobutylene and long-chain alcohol wax being about 86 to about 52 percent and the weight percent of long-chain alcohol wax being about 14 to about 48 percent.

5. An improved paraflin wax composition comprising a major amount of a paraflin wax and a minor amount of a polyisobutylene having a Flory molecular weight above about 30,000 and a long-chain alcohol wax having the following structural formula: C H (OI-l) wherein k is an integer from about 50 to about 310 and m is an integer from one to about 50, the weight percent of polyisobutylene in said minor amount of polyisobutylene and long-chain alcohol wax being about 86 to about 52 percent and the weight percent of long-chain alcohol wax being about 14 to about 48 percent.

6. An improved parafin wax composition comprising a major amount of a paraiiin wax having a melting point of about 90 to about 160 F. and a minor amount of a polyisobutylene having a Flory molecular weight of about 55,000 to about 1,325,000 and a long-chain alcohol wax having the following structural formula:

wherein k is an integer from about 50 to about 310 and m is an integer from one to about 50, the weight percent of polyisobutylene in said minor amount of polyisobutylene and long-chain alcohol wax being about 86 to about 52 percent and the weight percent of long-chain alcohol wax being about 14- to about 48 percent.

7. An improved paraliin wax composition comprising at least about 90 percent by weight of a paraffin wax having a melting point of about 133 F. and the remainder polyisobutylene having a Flory molecular weight of about 84,000 and a long-chain alcohol wax having the following structural formula: C H OH, the weight percent of polyisobutylene in said remainder of polyisobutylene and long-chain alcohol wax being about 86 to about 52 percent and the weight percent of long-chain alcohol wax being about 14 to about 48 percent.

8. An improved paraffin wax composition comprising at least about 90 percent by weight of a paraiiin wax having a melting point of about 133 F. and the remainder polyisobutylene having a Flory molecular weight of about 84,000 and a long-chain alcohol wax having the following structural formula: C H (OH) the weight percent of polyisobutylene in said remainder of polyisobutylene and long-chain alcohol wax being about 86 to about 52 percent and the weight percent of long-chain alcohol wax being about 14 to about 48 percent.

9. An improved parafiin wax composition comprising at least about 90 percent by weight of a paraffin wax having a melting point of about 125 F. and the remainder polyisobutylene having a Flory molecular weight of about 587,000 and a long-chain alcohol wax having the following structural formula: C H AOHM, the weight percent of polyisobutylene in said remainder of polyisobutylene and long-chain alcohol wax being about 86 to about 52 percent and the weight percent of long-chain alcohol wax being about 14 to about 48 percent.

10. An improved parafiin wax composition comprising at least about 90 percent by weight of a parafiin wax having a melting point of about 125 F. and the remainder polyisobutylene having a Flory molecular weight of about 1,325,000 and a long-chain alcohol wax having the following structural formula: C H (OH) the weight percent of polyisobutylene in said remainder of polyisobutylene and long-chain alcohol wax being about 86 to about 52 percent and the weight percent of long-chain alcohol wax being about 14 to about 48 percent.

11. A fibrous material having a coating thereon comprising a paraffin wax composition containing a major amount of a parafiin wax and a minor amount of a rub- 10 bery isobutylene polymer and a long-chain alcohol wax having the following structural formula:

wherein k is an integer from about 50 to about 310 and m is an integer from one to about 50.

12. A fibrous material having a coating thereon com prising a paraffin wax composition containing a major amount of a paraflin wax and a minor amount of a polyisobutylene and a long-chain alcohol wax having the following structural formula: C I-I (OI-I) Wherein k is an integer from about 50 to about 310 and m is an integer from one to about 50.

13. A fibrous material having a coating thereon comprising a parafiin wax composition containing a major amount of a paratlin wax and a minor amount of a rubbery isobutylene polymer and a long-chain alcohol wax having the following structural formula:

wherein k is an integer from about 50 to about 310 and m is an integer from one to about 50, the weight percent of rubbery isobutylene polymer in said minor amount of rubbery isobutylene polymer and long-chain alcohol wax being about 92 to about 46 percent and the weight percent of long-chain alcohol wax being about 8 to about 5 4 percent.

14. A fibrous material having a coating thereon comprising a paratlin wax composition containing a major amount of a paraffin wax and a minor amount of a polyisobutylene having a Flory molecular weight above about 5,000 and a long-chain alcohol wax having the following structural formula: C H (OH),,,, wherein k is an integer from about 50 to about 310 and m is an integer from one to about 50, the weight percent of polyisobutylene in said minor amount of polyisobutylene and longchain alcohol wax being about 86 to about 52 percent and the weight percent of long-chain alcohol wax being about 14 to about 48 percent.

15. A fibrous material having a coating thereon comprising a parafiin wax composition containing a major amount of a parafiin wax and a minor amount of a polyisobutylene having a Flory molecular weight above about 30,000 and a long-chain alcohol wax having the following structural formula: C H (OH),,,, wherein k is an integer from about 50 to about 310 and m is an integer from one to about 50, the weight percent of polyisobutylene in said minor amount of poly/isobutylene and long-chain alcohol wax being about 86 to about 52 percent and the weight percent of long-chain alcohol wax being about 14 to about 48 percent.

16. A fibrous material having a coating thereon com prising a paraffin wax composition containing a major amount of a paraffin wax having a melting point of about 90 to about F. and a minor amount of a polyisobutylene having a Flory molecular weight of about 55,000 to about 1,325,000 and a long-chain alcohol wax having the following structural formula:

wherein it is an integer from about 50 to about 310 and m is an integer from one to about 50, the weight percent of polyisobutylene in said minor amount of polyisobutylene and long-chain alcohol wax being about 86 to about 52 percent and the weight percent of long-chain alcohol wax being about 14 to about 48 percent.

17. A paper having a coating thereon comprising a parafiin wax composition containing at least about 90 percent by weight of a parafiin wax having a melting point of about 133 F. and the remainder polyisobutylene having a Flory molecular weight of about 84,000 and a long-chain alcohol wax having the following structural formula: C H OH, the weight percent of polyisobutylene in said remainder of polyisobutylene and long chain alcohol wax being about 86 to about 52 percent and,the'weight percent of long-chain alcohol wax being about 14 to about 48 percent 18. A paper havinga coating thereon comprising a paraffin Wax composition containing at least about 90 percent by weight of a. parafiin 'WHX having a melting point of about 133 F. and the remainder polyisobutylene having a Flory molecular weight of about 84,000 and a long-chain alcohol waxnhaving the following. structural formula: C H (OH) the weight percent of polyisobutylene in said-remainder 'of polyisobutylene and long-chain alcohol wax, being about 86 to about 52 percent and the weight per cent of long-chain alcohol Wait being about 14 to about 48 percent.

19. A paper having a coating thereon comprising a paraffin wax composition containing at least about 90 percent by weight of a paraffin wax having a melting point of about 125 F. and the remainder polyisobutylene having a Flory molecular weight of about 87,000 and a long-chain alcohol wax having the following structural formula: C147H294(OH)2, the weight percent of polyisobutylene in said remainder of polyisobutylene and longchain alcohol wax being about 86 to about 52 percent and the weight percent of about 14 to about 48 percent.

20. A paper having a coating thereon comprising a paraifin wax composition containing at least about percent by Weight of a paraffin wax having a melting point of about F. and the remainder polyisobutylene having a Flory molecular Weight of about 1,325,000 and a long-chain alcohol wax having the following structural formula: C H (OH) the weight percent of polyisobutylene in said remainder of polyisobutylene and long-chain alcohol wax being about 86 to about 52 percent and the weight percent of long-chain alcohol wax being about 14 to about 48 percent.

References @itetl in the file of this patent UNITED STATES PATENTS long-chain alcohol wax being- 

1. AN IMPROVED PARAFFIN WAX COMPOSITION COMPRISING A MAJOR AMOUNT OF A PARAFLLN WAX AND A MONOR AMOUNT OF A RUBBERY ISOBUTYLENE POLYMER AND A LONG-CHAIN ALCOHOL WAX HAVING THE FOLLOWING STRUCTUAL FORMULA 